curriculum/challenges/english/blocks/daily-coding-challenges-python/697a49e6ff50d756c9b69363.md
Given two arrays representing the lap times (in seconds) for two speed skaters, return the lap number where the difference in lap times is the largest.
The first element of each array corresponds to lap 1, the second to lap 2, and so on.
largest_difference([26.11, 25.80, 25.92, 26.23, 26.07], [25.93, 25.74, 26.53, 26.11, 26.30]) should return 3.
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(largest_difference([26.11, 25.80, 25.92, 26.23, 26.07], [25.93, 25.74, 26.53, 26.11, 26.30]), 3)`)
}})
largest_difference([27.04, 25.94, 26.22, 26.07, 26.18], [25.59, 25.80, 26.11, 26.01, 26.23]) should return 1.
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(largest_difference([27.04, 25.94, 26.22, 26.07, 26.18], [25.59, 25.80, 26.11, 26.01, 26.23]), 1)`)
}})
largest_difference([25.82, 25.90, 26.05, 26.00, 26.48], [25.85, 25.92, 26.07, 25.98, 25.95]) should return 5.
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(largest_difference([25.82, 25.90, 26.05, 26.00, 26.48], [25.85, 25.92, 26.07, 25.98, 25.95]), 5)`)
}})
largest_difference([25.88, 26.10, 25.95, 26.05, 26.00], [25.90, 26.55, 25.92, 26.03, 26.01]) should return 2.
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(largest_difference([25.88, 26.10, 25.95, 26.05, 26.00], [25.90, 26.55, 25.92, 26.03, 26.01]), 2)`)
}})
largest_difference([25.92, 26.01, 26.05, 25.88, 26.12], [25.95, 26.00, 26.03, 26.45, 26.10]) should return 4.
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(largest_difference([25.92, 26.01, 26.05, 25.88, 26.12], [25.95, 26.00, 26.03, 26.45, 26.10]), 4)`)
}})
def largest_difference(skater1, skater2):
return skater1
def largest_difference(skater1, skater2):
max_diff = -1
lap_number = 1
for i in range(len(skater1)):
diff = abs(skater1[i] - skater2[i])
if diff > max_diff:
max_diff = diff
lap_number = i + 1
return lap_number